Water quality for ZIP code 99371
ZIP 99371 covers Washtucna in Adams County, Washington, one of 5 ZIP codes in the county. 48 active public water systems serve the county; 34 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Adams County
29 systems, nearest firstNon-community systems in Adams County (18: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Hatton Coulee Rest Area |
1,255 | 1 | 0 | |
|
Hgh INC Water System |
613 | 0 | 0 | |
|
National Food NW Lind |
61 | 3 | 0 | |
|
Big B Truck Stop |
41 | 1 | 0 | |
|
Schrag Eb/wb Rest Areas |
3,096 | 1 | 0 | |
|
Four Seasons Campground |
15 | 2 | 0 | |
|
Monsanto Cunningham Rd |
25 | 0 | 0 | |
|
Bayer Midwest Production Co. |
124 | 1 | 0 | |
|
Country Cousins |
66 | 1 | 0 | |
|
Adams County Fair |
503 | 2 | 0 | |
|
Iglesia Bethel |
197 | 1 | 0 | |
|
Klingeman Well |
42 | 1 | 1 | |
|
Radar 2 Farmworker Housing |
96 | 0 | 0 | |
|
Schaake Rd Housing |
96 | 0 | 0 | |
|
Ktw Orchards |
81 | 0 | 0 | |
|
SM West Farmworker Housing |
52 | 0 | 0 | |
|
Bruce Water System |
210 | 2 | 0 | |
|
Crestview Water Association |
31 | 0 | 0 |
About this data
Water systems are matched to Adams County, the county this ZIP code lies in, nearest to the ZIP code's centre first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system.
ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA files.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Washington records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.